package jdbc;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.Statement;

/**
 * 执行DML语句-INSERT
 */
public class JDBCDemo2 {
    public static void main(String[] args) throws Exception {
        Class.forName("com.mysql.cj.jdbc.Driver");
        //2,数据库地址格式：jbdc:mysql://数据库IP：端口/数据库名？一堆参数
        Connection connection=
                DriverManager.getConnection("jdbc:mysql://localhost:3306/tedu?characterEncoding=utf8&useSSL=false&serverTimezone=Asia/Shanghai&rewriteBatchedStatements=true","root","root");
        System.out.println("成功连接数据库！");
        //3
        Statement steatement=connection.createStatement();
        //向userinfo表中插入一条记录
        /*INSERT INTO userinfo(username,password,nickname,age)
        VALUES('张三','123456','阿三',22)
        int executeUpdate(String sql)
        专门用于执行DML语句的(INSERT,UPDATE,DELETE)
        返回值表达执行该语句后影响了表中多少条记录
         */
        String sql="INSERT INTO userinfo(username,password,nickname,age)\n" +
                   "VALUES('张三','123456','阿三',22)";
        int num=steatement.executeUpdate(sql);
        if(num>0){
            System.out.println("插入完毕!");
        }
        connection.close();
    }
}
